What does Disneyland have in common with Broadway?

What is the most popular live theater in Southern California? Is it the Pantages? The Segerstrom Center? The Ahmanson Theatre?
While all those venues are great for watching Broadway-caliber shows, I am going to go with Disneyland as the most popular live theater in the region.
Disneyland? A theater venue? Insiders know that Disney calls its employees “cast members” and divides its public and employees-only areas as “on stage” and “back stage,” so the company h